Ball-cock for tanks for water-closets



(No Model.)

J. R, ALLAN. BALL COGK FOR TANKS FOR WATER CLOSETS, &0.

No. 503,339 Patented Aug. 15, 1893.

UNITED STATES PA'TENT OFFICE@ JOHN R. ALLAN, OF BO`TON, MASSACHUSETTS.

BALL-COCK FOR TANKS FOR WATER-CLOSETS, &0.

SPECIFICATION forming part of Letters Patent No. 503,339, dated August15, 1893. Application filed March G, 1893. Serial No. &64,785. (Nomodel.)

To all whom it may conccrn:

Be" it known that I, JOHN R. ALLAN, a subject of the Queen of GreatBritain, residing in Boston, in the county of Suffolk and State ofltlassachusetts, have invented a new and useful Improvement inBall-Cocks forTanks for VVatenClosets, dac., of which the following is aspecification.

In this invention the apparatus is constructed with a relief attachmentwhich prevents the valve from closin g slowly and grad ually, but holdsit open while the tank is being refilled until it is nearly full, whenit allows the valve to close quickly and suddenly. Thus the unpleasantcontinuous sound produced by a slowly closing valve is avoided.

In the accompanying drawings, in which similar letters of referenceindicate corresponding parts, Figure l is a sectional View takenvertically ot' a ball-cock embodying my invention. Fig. 2 is a sectionon line m, Fig. 1, looking toward the left. Fig. 3 is a detail insection on the same line showing a modification.

Arepresents the wall of a tank, and B the ball or oat therein.

C is the supplypipe leading into the casing D of the valve E of which E'is the stern, all constrncted as usual. The valve rises and drops in thecasing D, rising toits seat D' to stop the supply, and, when in theposition shown in Fig. 1 allows the water to fiow into the tank throughthe space or passage d.

The construction ot' the cork e and venthole e' is too common to needexplanation.

The valve is provided with a guide-pin f which extends into a slot inthe bent arm F, said arm being pivoted at F' to the casing D and beingprovided with a disk H at its outer end which is screwed to and therebysuppots, the fioat B.

The casing D is provided on the side next the ball with a pair of ears Ibetween which is pivotally secured a bent lever, the horizontal or longarin K of which has secured to the under side of its outer end aconcavo-convex disk or cup L, which corresponds in shape with the ball Bdirectly over which it is set. The short arm N of this lever extendsdown at an acute angle with the long 'arm K and is provided at its lowerend with a foot or toe piece N' oi' suitable size and shape to extend toand rest or catch upon the corner of the arin F, as shown in Fig. 1.

A vertical shoulder S extends from the outer end of the arin F againstthe outer surface of the casing D. When water is used and drawn fron thetank, the fioat B drops with the surface of the water into the positionshown in Fig. l, but cannot drop any farther as it is held by theshoulder S against the casing D, so that it is held in suspension abovethe surface of the water should the water recede sufficiently. r

When the water, replenished through the supply pipe C and space d in theValve, rises suiticiently the air is trapped under the disk or cup L,and, when the pressure is strong enough, suddenly lifts it and hencelifts the outer end of the lever K into the position shown in brokenlines in Fig. 1, noving the toe N' froni its position on the arin F,where it is barely caught, with the result that the said arn F, which issecured to the float, being free as the fioat rises suddenly lifts thevalve E and seats it against the part D' and shuts off the supply.

Thus it will be seen that the novenent of the fioat is short and sudden,and it does not begin to rise until the supply is ready to be cut off,and when this is done, it is performed so quickly that it is impossiblethere should be any long unpleasant sound such as is caused by the waterwhile the valve is slowly closing during the gradual filling of thetank, as is the case in ball-cocks constructed as is now common.

In the modification shown in Fig. 3, the short arin N has two feet N'which lie under a T shaped piece P which serves as an aid to the feetcatching, in case the Water is sonewhat disturbed, so that the fioat andarni F are unsteady.

Having thus fnlly described my invention, what I claim, and desire tosecure by Letters Patent, is-

In a ball-cock for tanks for water closets &(3., in combination, thevalve-operating arn F pivoted to the stationary portion D of theapparatus and having the fioat Secured toits free end, said arin beingprovided with a check or stop, as S, and the level' K N pivoted to theICC casing and oonsisting of the substantially of the said cup or disk,substantially as set horizontal long arm K provided at its oter fo'th.end with the cup or disk L, and the nearly Vertical Short arm N providedwith the pro- JOHN ALLAN' 5 jecting foot or toe N' for engaging said armVVitnesses:

F at the extreme edge thereof, and adapted HENRY W. WILLIAMS,

to be tripped to release sa'darm' by' the rise J. M. HARTNETT;

